The biggest advantage the new vaccine has is the clinical trial has given promising results and in a single dose.

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It was hard to find a vaccine for dengue as the disease can be caused by any of four virus serotypes. The vaccine should thus be tetravalent to all four strains – provide equal protection against all serotypes.

Dengue causes high fever, rash and joint pain. It may also cause serious diseases, sometimes leading to death.

Dengue is a global concern with nearly 40% of the world population being at risk of contracting the infection. Dengue is a viral infection is spread by mosquitoes mostly in the tropical and subtropical regions of the world.